It also depends on light pollution. From a really dark site at high elevation like in the Sierras, Andromeda stretches across more than 7 degrees! In my 20x80 binoculars it's more than its field of view and you can see dark lanes and globular clusters and etc. I now have 15x70 and 20x80 binos as well as 70mm and 80mm refractors.